South Carolina is about 2.5 times smaller than South Dakota.

South Dakota is approximately 196,540 sq km, while South Carolina is approximately 77,983 sq km, making South Carolina 39.68% the size of South Dakota. Meanwhile, the population of South Dakota is ~814,180 people (3.8 million more people live in South Carolina).
This to-scale comparison of South Dakota vs. South Carolina uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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